#import <Foundation/Foundation.h>

int main (int argc, const char * argv[])
{

    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];

    int sum = 0;
    for(int i = 0; i != 1000; i++) {
        if (i % 3 == 0 || i % 5 == 0) {
            sum += i;
        }
    }

    NSLog(@"answer: %d", sum);

    [pool drain];
    return 0;
}